A lot of durability can be found in the actual manufacturing process itself. When I develop any piece of hardware I consider not just what it is I am trying to make but also how it will be made what material it will be made from, and how that material will be manufactured. And I mean no disrespect as I have no idea your level in developing hardware. But your sleeves and eyelets if reinforced correctly should not stretch at all they should be ultra durable they will eventually shatter but they will not stretch.Īnother thing to consider when developing a product. My opinion is that the bulk of the material should someone stretch under stress. My experience in similar things, of the automotive world. While I’m not directly familiar with the product you are trying to create. Since I am reading your topic on mobile I don’t have a means of examining your 3D file and detail to see if you added sleeves to protect your bearing mounts. The second is that you can add to your punch outs say an insert of brass or some blend of steel alloy. And there are various finishes that can be applied to it that may add a small amount of additional durability. I previously thought about rigging up a many-stage block and tackle in the frame of my hydraulic press to test it to destruction with a digital hang scale, but that now seems unnecessary as well as potentially more exciting than I’m really looking for.Ī couple of other points to consider. Given the 4000 psi (250 lbs per 1/16 square inch) difference between tensile yield strength and ultimate tensile strength, and 12% elongation at break, I would expect substantial deformation before failure. Realistically, it will be used with a rope or a thinner carabiner at the open end, but this seems safe to hoist a couple of backpacks at least. I realized that a ½" hole in ¾" strap was a total of ¼" cross section across the face of the straps, and two ⅛" straps back to back is also ¼" cross section through the straps, so I should be able to divide tensile strength in PSI by 16 for a good strength estimate.Īluminum 6063 is weaker than 6061 but more corrosion-resistant, so using its yield tensile strength of 31000 psi with a 1.5 safety factor gives almost 1300 lbs safe working load, if supported at both ends by a ½" shaft almost 2200 ultimate tensile strength. The ends around the holes of the strap are clearly the weak points. Put loctite in both ends of the aluminum rod. Vice: Bent the aluminum straps together near the ⅝" hole ends so that the ⅝" holes touch. ⅝" is just because it was a good match for some carabiners we have choose hole size and corresponding placement to match.) (The ½" hole about ½" from one end, and the ⅝" hole about ⅝" from the other end. Mill: Two pieces: Cut ⅝" and ½" holes at opposite ends of the aluminum strap, about 3" long. Drilled and tapped ½" aluminum rod ¾" deep M5 (because I have appropriate M5 screws), parted it off ¾" long. Lathe: Used a 10mm round carbide insert as a form tool to make a pulley. I suggested that we had the stuff around the house to manufacture this ourselves, and make it much lighter (useful for camping) than the expensive high-load snatch blocks available for sale. Trending Questions What is H97 fault on Panasonic microwave? How can you use your washing machine with 220V 50Hz in 220V 60Hz power supply? What is the difference between a consumer and a customer? Where can you find the poketech app stopwatch? Harmony 520 remote control a Harbor Breeze ceiling fan? Where can you download Laney amplifier schematics? What is the definition of home care nursing? What is the difference between 1.My son is about to go camping, and wished for snatch blocks to hoist bear bags into trees more easily.
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